What this means
The IEEE assigned the MA-L block 0004F3 to FS FORTH-SYSTEME GmbH. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting 00:04:F3, it is FS FORTH-SYSTEME GmbH hardware.
Frequently Asked Questions
Who owns MAC prefix 0004F3?
0004F3 is registered to FS FORTH-SYSTEME GmbH in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. FS FORTH-SYSTEME GmbH's block covers 16,777,216 addresses.
What devices use 0004F3?
Any network device with a MAC address starting 00:04:F3 was manufactured by or for FS FORTH-SYSTEME GmbH.